Subzero: Add x86-64 to the bots.

buildbot/buildbot_pnacl_toolchain_tests.sh

 #!/bin/bash
 # Copyright (c) 2012 The Native Client Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # Run toolchain torture tests and llvm testsuite tests.
 # For now, run on linux64, build and run unsandboxed newlib tests
 # for all 3 architectures.
 # Note: This script builds the toolchain from scratch but does
 #       not build the translators and hence the translators
@@ skipping 204 matching lines @@
   local optset
   optset[1]="--opt O3f --opt O2b"
   for arch in ${archset}; do
     # Run all appropriate frontend/backend optimization combinations.  For now,
     # this means running 2 combinations for x86 (plus one more for Subzero on
     # x86-32) since each takes about 20 minutes on the bots, and making a single
     # run elsewhere since e.g. arm takes about 75 minutes.  In a perfect world,
     # all 4 combinations would be run, plus more for Subzero.
     if [[ ${archset} =~ x86 ]]; then
       optset[2]="--opt O3f --opt O0b"
-      if [[ ${archset} == x86-32 ]]; then
+      if [[ ${archset} == x86-32 || ${archset} == x86-64 ]]; then
         # Run a Subzero -O2 test set on x86-32.
         optset[3]="--opt O3f --opt O2b_sz"
       fi
     fi
     for opt in "${optset[@]}"; do
       echo "@@@BUILD_STEP llvm-test-suite ${arch} ${opt} @@@"
       python ${LLVM_TEST} --testsuite-clean
       LD_LIBRARY_PATH=${LIBRARY_ABSPATH} python ${LLVM_TEST} \
         --testsuite-configure --testsuite-run --testsuite-report \
         --arch ${arch} ${opt} -v -c || handle-error
@@ skipping 23 matching lines @@
   exit $EXIT_STATUS
 }
 
 
 if [ $# = 0 ]; then
   # NOTE: this is used for manual testing only
   tc-test-bot "x86-64 x86-32 arm"
 else
   "$@"
 fi